CN101572098B

CN101572098B - Apparatus and methods for forming, recording, and reproducing the recording medium

Info

Publication number: CN101572098B
Application number: CN 200710148221
Authority: CN
Inventors: 朴容彻
Original assignee: LG Electronics Inc
Current assignee: LG Electronics Inc
Priority date: 2004-03-19
Filing date: 2004-12-30
Publication date: 2013-02-20
Anticipated expiration: 2024-12-30
Also published as: CN1934623B; CN101572098A; CN101114471A; CN1926624A; CN101217049A; CN1934622A; CN1926624B; CN1934622B; CN101217049B; CN101114471B; CN1934623A

Abstract

A recording medium, such as a high-density and/or optical recording medium including physical access control (PAC) information recorded thereon, and apparatus and methods for recording to and reproducing from the recording medium, in order to improve data protection, data management and/or reproduction compatibility.

Description

Equipment and the method for formation, recording and reconstruction recording medium

The application is that international filing date is on Dec 30th, 2004, dividing an application of the application that application number is PCT/KR2004/003515, by name " have physical access control (PAC) recording of information medium on it and be used to form, equipment and the method for this recording medium of recording and reconstruction ".

Technical field

The present invention relates to PAC (physical access control), PAC district, PAC bunch, comprise the PAC district and/or bunch medium (for example, such as high density compact discs such as Blu-ray disc) and be used for to this medium recording and/or from equipment and the method for these media reproducing data.

Background technology

Can be used to record a large amount of data such as media such as CDs.In the middle of various available CDs, in the middle of developing such as the high density optical media (HD-DVD) of the permissions such as Blu-ray disc (hereinafter referred to as " BD ") records and/or the more High Density Video of storage and/or voice data.

BD also comprises can rewrite Blu-ray disc (BD-RE), write-once Blu-ray disc (BD-WO) and read-only Blu-ray disc (BD-ROM).

Current, may there be incompatibility between the driver that a problem of existing system is different editions, for example, the driver that has a previous version of one group of previous ability may be difficult to with comprise from the mutual medium of the driver of at least one ability in one group of ability afterwards mutual.

Summary of the invention

Exemplary embodiment of the present invention provides such as the PAC on the media such as high density compact disc and is used for to the medium recording data of using PAC with from equipment and the method for the media reproducing data of using PAC.

Exemplary embodiment of the present invention provides the superincumbent physical access control of record (PAC) information, is used for strengthening data protection, strengthens data management, improves reproduction compatibility, avoids data corruption and/or reduces operation unnecessary, that repeat.

Exemplary embodiment of the present invention provides such as the medium such as high density compact disc and the equipment and the method that are used for management PAC.

Exemplary embodiment of the present invention provides such as the media such as high density compact disc and equipment and the method for coming management data with PAC.

In one exemplary embodiment, the present invention is directed to the recording medium that comprises at least one physical access control (PAC) district, this at least one physical access control (PAC) is distinguished and then is comprised at least one physical access control (PAC) bunch, and this at least one PAC bunch comprise for management to the record of this recording medium and/or from the information of the reproduction of this recording medium.

In one exemplary embodiment, the present invention is directed to a kind of method at the enterprising line item of recording medium, comprise that record contains for to the record of recording medium and/or from the physical access control (PAC) of the information of the reproduction of recording medium bunch, and record comprises PAC bunch of status information of PAC bunch validity at least.

In one exemplary embodiment, the present invention is directed to a kind of method from recording medium reproducing, comprise: read the status information of at least one physical access control (PAC) bunch, this at least one PAC bunch comprises for the information of management from the reproduction of recording medium; And state-based information reads this at least one PAC bunch, and this status information comprises each PAC bunch validity at least.

In one exemplary embodiment, the present invention is directed to a kind ofly for to recording medium recording and/or from the equipment of recording medium reproducing, comprising: driver is used for driving optical recording apparatus at the recording medium identifying recording layer or from the recording medium reproducing data; And controller, be used for controlling drive records or rendering data based at least one physical access control (PAC) district, this at least one PAC district comprises at least one physical access control (PAC) bunch, PAC bunch comprises for management to the record of recording medium and/or from the information of the reproduction of recording medium, this at least one PAC district also comprises each PAC bunch status information, and status information is indicated each PAC bunch validity at least.

In one exemplary embodiment, the present invention is directed to a kind ofly for to recording medium recording and/or from the equipment of recording medium reproducing, comprising: driver is used for driving optical record medium at the recording medium identifying recording layer or from the recording medium reproducing data; And controller, be used for controlling drive records or rendering data based at least one physical access control (PAC) district, this at least one PAC district comprises at least one physical access control (PAC) bunch, described controller reads at least one PAC bunch status information, this at least one PAC bunch comprises for the information of management from the reproduction of recording medium, and described controller state-based information reads this at least one PAC bunch, and status information comprises each PAC bunch validity at least.

In one exemplary embodiment, the present invention is directed to a kind of recording medium that comprises the status information of at least one physical access control (PAC) bunch and each PAC bunch, PAC bunch comprises for management from the record of recording medium and/or to the information of the reproduction of recording medium, and status information is indicated each PAC bunch validity at least.

The above general description and the following detailed description that should be appreciated that the embodiment of the invention are exemplary and explanat, and are intended to for further explanation is provided such as the present invention for required protection.

Brief Description Of Drawings

Comprise that accompanying drawing is for the further understanding to exemplary embodiment of the present is provided, they are included and are consisted of the application's a part, and accompanying drawing shows exemplary embodiment of the present invention, wherein,

Fig. 1 illustrates according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 2 is the schematic diagram that illustrates according to the configuration in the INFO2 district on the high density compact disc of one exemplary embodiment of the present invention and INFO1 district;

Fig. 3 illustrates the PAC structure on the high density compact disc of being recorded in according to one exemplary embodiment of the present invention;

Fig. 4 illustrates the structure according to the PAC on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 5 illustrates the configuration according to " unknown PAC rule " field of one exemplary embodiment of the present invention;

Fig. 6 illustrates according to the section district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 7 illustrates according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 8 illustrates according to the section district by the management of a plurality of PAC district on the high density compact disc of one exemplary embodiment of the present invention;

Fig. 9 illustrates according to the dish definition structure (DDS) on the high density compact disc of one exemplary embodiment of the present invention;

Figure 10 illustrates the DDS according to the expression PAC state on the high density compact disc of one exemplary embodiment of the present invention;

Figure 11 to 13 is the schematic diagram that illustrate according to several different schemes of the DDS of one exemplary embodiment of the present invention, and wherein every kind of different schemes represents a kind of PAC state on the high density compact disc;

Figure 14 illustrates other different schemes according to the DDS on the high density compact disc of exemplary embodiment of the present invention;

Figure 15 illustrates other different schemes according to the DDS of the expression PAC state on the high density compact disc of exemplary embodiment of the present invention;

Figure 16 illustrates the DDS according to the expression PAC state on the high density compact disc of another exemplary embodiment of the present invention;

Figure 17 illustrates the block diagram according to the optical recording/reproducing apparatus of one exemplary embodiment of the present invention;

Figure 18 illustrates according to one exemplary embodiment of the present invention a kind of to have recorded upward the high density compact disc record of PAC and/or from the process flow diagram of the method for its reproduction.

Implement best mode of the present invention

Now will be in detail with reference to embodiments of the invention, shown in the drawings of the example of these embodiment.In any possible occasion, in institute's drawings attached, will represent with identical mark same or analogous part.

Fig. 1 illustrates according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 1, high density compact disc can be partitioned from the inner ring to the outer ring introduces district, data field and draw-out area.Introducing the district can be top INFO2 district and INFO1 district be used to recording various information by further subregion.INFO2 district and/or INFO1 district can comprise PAC (physical access control) district.

For simplicity, the PAC district that distributes to the INFO2 district is marked as the PACII district, and the PAC district that distributes to the INFO1 district is marked as the PACI district.Can record original PAC above one of PACII district and PACI district, and another can be the backup area be used to the copy that records original PAC.If write direction and be inner ring from dish to the outer ring, then original PAC is recorded in the PACII district, will be favourable in the PACI district and will back up that PAC is recorded in.

Can provide the PAC district to process contingent problem when the actuator device than legacy version can't detect function on the dish of having of adding and the function of the actuator device compatibility of more recent version.The PAC district can use one or more " unknown rule " to process compatibility issue.

" unknown rule " can be used for the predictable operations of console panel, such as the linearity in the basic controlling of reading and writing etc., defectiveness district is replaced, logical overwrite etc.Also can for example be used for defining the section of whole certain part of coiling or coiling in the zone that dish provides indication " unknown rule " to be suitable for wherein, this will be described in more detail below.

Thus, by the zone of definition dish, can visit the dish of more recent version by using " unknown rule " than the actuator device of legacy version, thereby reduce the unnecessary accessing operation than old version drive equipment.

In addition; by for coming than the accessible area on the physical region of the actuator device definition dish of legacy version by using PAC to conduct interviews; the data field that comprises the user data that records on it can be subject to more strong protection; and/or can prevent or reduce to the dish unauthorized access (for example, assault).

But introducing the INFO2 district and the INFO1 district that wherein have PACII and I district in the district can comment in view of the write attribute of high density compact disc.

Fig. 2 is the schematic diagram that illustrates according to the configuration in the INFO2 district on the high density compact disc of one exemplary embodiment of the present invention and INFO1 district.

With reference to figure 2, for an example BD-RE high density compact disc, the INFO2 district can have 256 bunches, comprises 32 bunches of the PACII district, is used for 32 bunches of DMA (defect management) 2 districts of defect management, records 32 bunches of BZ (buffer zone) 3 districts of 32 bunches of CD (control data) 2 districts of control information and/or buffer zone on it.

The INFO1 district can comprise 32 bunches of the BZ2 district of buffer zone, 32 bunches of drive zone (can be the drive zone for the storage drive specific information), be used for 32 bunches of DMA1 district of managing defect, for 32 bunches of the CD1 district of record controls information and/or can be used as the BZ1-PACI district in PAC district.

For write-once high density compact disc (BD-R), the INFO2 district can have 256 bunches, comprises PACII district, DMA2 district, CD2 district and BZ3 district, its each have 32 bunches; And the INFO21 district comprises BZ2 district, DMA1 district, CD1 district and/or BZ1-PACI district, its each have 32 bunches, and 128 bunches of drive zone.

For read-only high density compact disc (BD-ROM), PAC can be main PAC, and the INFO2 district can have 256 bunches, comprises PACII district, CD2 district and BZ3 district, its each have 32 bunches; And 256 bunches of the INFO1 district comprise CD1 district and/or BZ1-PACI district, its each have 32 bunches.

But the PAC district of exemplary embodiment of the present invention can be assigned to according to the rewrite speciality of high density compact disc INFO2 district and/or the INFO1 district that introduces in the district, and each is distributed 32 bunches.

In 32 bunches PAC district, a PAC can have one bunch, is used for recording a plurality of effective PAC.Describe with reference to Fig. 3 and wherein to have recorded a PAC as one bunch example structure.

Fig. 3 shows the PAC that records on the high density compact disc according to one exemplary embodiment of the present invention.

A PAC with reference to 3, one bunches of sizes of figure (32 sectors) can comprise heading area and the specific information district that is exclusively used in particular plate driver (for example, CD drive).The PAC heading area can have 384 bytes of the first sector of distributing to PAC, be used for recording various PAC information, such as the information about " unknown PAC rule " and section, and can record the information that is exclusively used in (light) disk drive on another zone in PAC district, this information can be called as " known regimes ".

With reference to Fig. 4 example structure with the PAC that records in the said structure is described.For simplicity, in this is described, need in greater detail specific fields with reference to the accompanying drawing that these specific fields are shown among the PAC.

Fig. 4 shows according to the PAC on the high density compact disc of one exemplary embodiment of the present invention.

With reference to figure 4, PAC can comprise the stem part that is applicable to all PAC with and on recorded the information that is exclusively used in driver the zone.

Example stem part can comprise " PAC_ID " of 4 bytes, " unknown PAC rule ", " entire--disc--flags ", " hop count " and/or 32 sections of 1 byte of 1 byte of 4 bytes, and namely section 0 is to section 31, its each 8 bytes are arranged.

" PAC_ID " can provide current PAC state and identification code, for example, if " PAC_ID " comprises ' 00 00 00 00 ' position, then should not be used by the current PAC of " PAC_ID " indication; If " PAC_ID " comprises " FF FF FF FE " position, then should " PAC_ID " indicate current PAC district because defective or similar former thereby unavailable; ' " PAC_ID " then is somebody's turn to do even the current PAC of indication district before had been used in FF FF FF FF ' position, and this PAC district also can be used again and " if PAC_ID " comprises.

By recording " PAC_ID " such as pre-determined bit such as ' 54 53 54 00 ' positions, " PAC_ID " but whether can be used as for definite dish be the code of the dish of current drive free access.Namely, if current drive can not be identified applied " PAC_ID " (may be current drive can not identify under the reason of mismatched etc. current PAC situation), then ' 54 53 54 00 ' position can be used as the code of the information of reference record in " unknown PAC rule " field.

As mentioned above, " unknown PAC rule " field can be used as the field of the opereating specification of the driver of specifying the current PAC of None-identified, and this further describes with reference to Fig. 5.

Fig. 5 shows " the unknown PAC rule " field according to one exemplary embodiment of the present invention.

With reference to figure 5, the controllability degree of the regional on the dish can be enabled by " unknown PAC rule ".In this example, the zone of control on " zone " the row indicating panel among Fig. 5, " control " tabulation is shown such as control types such as read/write, and the figure place that control is required is shown in " figure place " tabulation.Additional bit in " figure place " row can represent to have the situation of the dual layer discs of two recoding/reproduction faces.

For example, in Fig. 5 " zone " row, the read/write controllability in PAC district can represent with "

PAC district

1,2 " field, and the writing controllability and can use "

DMA district

1,2 " field represent of defect management.The writing controllability and can represent with " replacement cluster " field of the replacement zone in defectiveness zone, the read/write controllability of data field can represent with " data field " field, and the logical overwrite controllability can represent with " logical overwrite " field.

Write controllability and be only applicable to rewritable disk BD-RE and BD-R, and the controllability of writing in the replacement zone in defectiveness zone also is applicable to rewritable disk BD-RE and BD-R.Thus, various exemplary characteristics of the present invention can be depending on high density (light) but the rewrite speciality of dish.

Use above-mentioned technology, " unknown PAC rule " field allows to specify zone of control at dish for the driver of mismatched.In addition, above-mentioned technology is also applicable to the access of controlling according to user's selection the specific physical region on the dish.

Return Fig. 4, " entire--disc--flags " field can be used as indicating PAC to be applicable to the field in whole panel, and " hop count " field is the field of the section district number that can represent that PAC is suitable for.

In one exemplary embodiment, the section that can distribute to a PAC maximum number.In one exemplary embodiment, can distribute maximum number to PAC be 32 section, and can be written in " section 0 " that respectively comprise 8 bytes about the information of the section of distributing and arrive in " section 31 " field.Each comprises the first physical sector number (PSN) and the tail PSN in the record section district thereon that distributes " section 0 " to " section 31 " field.

Below in more detail section is described.Fig. 6 illustrates according to the section district on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 6, if necessary, the section district of maximum number (for example, 32) can be arranged on high density compact disc, be used for using PAC to it.The section district of maximum number can be from " section 0 ".

In one example, by the tail PSN that " section " field in PACII and PACI district writes a PSN of the starting position that can indicate the section district that distributes and can indicate the rearmost position in the section district that distributes, the position in section district just can be identified by CD drive.

In an example arrangement, distribute a plurality of sections do not need to overlap entirely, and beginning and end position can bunch boundary specify.

Thus, in the exemplary embodiment, the present invention can provide a plurality of PAC, is used for several (for example, 32) of management section district, and this will describe in more detail following.

Fig. 7 illustrates according to the PAC district on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 7, can in a PAC district (for example, the PAC district of INFO2 or INFO1) of 32 bunches of sizes, write a plurality of effective PAC with same cluster size.The effective PAC district that can represent to have above-mentioned various PAC information and comprise copy can comprise effective PAC of maximum number (for example, 16), and each has identical size these effective PAC, and can be assigned to a PAC district.

The predetermined PAC_ID (for example, PAC_ID=54 53 54 00) that the driver versions that effective PAC can have with above-noted the CD of this PAC conforms to, and the PAC district that is not used can be PAC for subsequent use district.According to the setting of CD drive, (PAC_ID=00 00 00 00) can be filled with 00 that this district of indication is not used by PAC for subsequent use district, maybe can be retained as " not using the zone ".

Because in the situation of write-once high density compact disc BD-R, only write-once is that physics is possible, so in one example, in the spare area, do not write any content, until write and finish or coil and be closed (user does not carry out any other write in expectation).

Because physics repetition overwrite is possible in the situation that can rewrite high density compact disc BD-RE, so in one example, even effective PAC and copy PAC thereof are written in the PAC district of 32 bunches of sizes, it also is acceptable that several times write.

If defectiveness in will writing therein the PAC district of PAC then can be written to this PAC in the ensuing zone, defectiveness zone.Defective may be the result that panel surface is damaged or polluted, and when in the time will writing the region generating defective of PAC, PAC information can be written in the ensuing zone, defectiveness zone.

A plurality of effective PAC that can be assigned to the PAC district can have the various information relevant with the zone of control of dish, with reference to Fig. 8 this is described.

Fig. 8 illustrates according to the section district by the management of a plurality of PAC district on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 8, for the driver of different editions, can specify the controllable segment district at dish by using a plurality of PAC.That is, can come via the PAC#0 on the dish control section 0Seg#0 and section 1Seg#1, come control section 0Seg#0, section 1Seg#1 and section 2Seg#2 via PAC#1, and come control section 0Seg#0 via PAC#2.

In this example, can all do not overlapped by the section district of corresponding PAC control, and all section district begin to be reordered by ascending order from section #0, this indication PAC can be separate.

In addition, although a PAC can have at most 32 section districts, even in all section situation by a plurality of PAC management, also be no more than 32 by the sum of the section of a plurality of PAC management.

The zone of avoiding having write to above-mentioned PAC district when finding the position in effective PAC district from the PAC district or finding fast the next one can write the position in PAC district or initialization and/or the writing speed that may affect dish from the defectiveness district in above-mentioned PAC district.Especially, may carry out repeatedly retry to attempt to read the defectiveness zone.

In the exemplary embodiment, the invention provides a kind of various status informations of position about a plurality of effective PAC, position that the next one can be write PAC and/or method of other relevant information of in such as data structure such as dish definition structure (DDS) etc., writing.

DDS can be the information of size of the position that comprises a PSN about defect list, user data area, spare area and/or the district of other relevant information, and can be to be written in information in the DMA district of dish as the information in the defect management structures (DMS) with defect list (DFL).

The information that writes among the DMA is scanned the also information of preload in advance when dish is loaded in the driver.Therefore, in case be written among the DDS as pointer such as various status informations and/or other relevant information about PAC such as the position of a plurality of effective PAC, the position that the next one can be write PAC, CD drive need not to scan all PAC districts just can obtain information about the PAC district.

DDS can comprise the various information about the state in PAC district, below will be described this.

Fig. 9 illustrates according to the DDS on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Fig. 9, DDS can comprise " DDS identifier " field, " DDS form " field, " PSN (P_DA) of drive zone " field of the first physical sector number of expression drive zone, " defect list the one PSN (P_DFL) " field of the one PSN of expression defect list, " user data area LSN0 position " field of the position of the LSN (logic sector number) of expression user data area, " inner spare area 0 size (ISA0_size) " field of the size of expression inner spare area 0, " outer spare area size (OSA_size) " field of the size of expression outer spare area 0, " inner spare area 1 size (ISA1_size) " field of the size of expression inner spare area 1, " PAC is allocation space " field of the designated state in " the PAC bunch of defect state " field of the defect state in expression PAC district and/or expression PAC district.

Thus, exemplary DDS can provide the various status informations about PAC, such as by use " PAC bunch of defect state " field and/or " PAC is allocation space " field provide the defectiveness bunch in the PAC district the position and/or to its distributed effective PAC bunch position etc.

The method that use " PAC bunch of defect state " field and/or " PAC is allocation space " field represent the PAC status information below will be described in more detail.

Figure 10 is the schematic diagram that illustrates according to the DDS of the expression PAC state on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Figure 10, can be to two bytes of " PAC bunch of defect state " field distribution of DDS, be used for expression because bunch defective in PAC district or defective bunch is distinguished the failure that writes that causes.

As shown in the figure, the PDS N among Figure 10 (PAC defect state) position is the position that is used to indicate PAC bunch state, wherein 0 can to indicate PAC bunch of N be not the defectiveness zone, and 1 can to indicate PAC bunch of N be that defectiveness is regional.

The state in PAC#0 district can be indicated in the PDS0 position, and the state in PAC#1 district can be indicated in the PDS1 position, and the rest may be inferred, until can be to the PDS15 position of the state that is used to indicate effective PAC of PAC district distribution (for example, for totally 16 situation).

Also can distribute two bytes to " PAC is the allocation space " in DDS district, be used to indicate the distribution state in PAC district.

PSB N among Figure 10 (PAC mode bit) can be the position of the distribution state of PAC bunch of indication, wherein can indicate the PAC bunch of N can be by newly assigned state for 0, for example, PAC is not used or the state of PAC_ID=00000000 or FFFFFFFF, and 1 state that can indicate PAC bunch of N to be assigned with.

In this example, similar with the PDS position, can distribute the PSB position to the PSB15 position from the PSB0 position, thus indication PAC#0 district, PSB0 position, indication PAC#1 district, PSB1 position, etc.The various exemplary embodiments that represent the state in PAC district with DDS as described below will be discussed.

Figure 11 to 13 is the schematic diagram that illustrate according to the various exemplary embodiments of the DDS that respectively represents a kind of PAC state on the high density compact disc of one exemplary embodiment of the present invention.

Referring to Figure 11, on the bitmap of " PAC bunch of defect state " field, the PDS1 position is 1, and this field is the information about the defectiveness zone in PAC district in the information that comprises among the DDS.Accordingly, can make CD drive know that the PAC#1 district is defective based on this information.

Equally, on the bitmap of " PAC is allocation space " field of the distribution state in indication PAC district, PSB0, PSB1 and PSB2 position also are 1, based on above-mentioned information, can make CD drive know that PAC#0, PAC#1 and PAC#2 district are in distribution state.Therefore, be not the defectiveness zone the next available PAC district of range of distribution be the PAC#3 district.

Equally, referring to Figure 12, because on the bitmap of " PAC bunch of defect state " field, PDS0, PDS1, each is 1 for PDS4 and PDS5 position, know PAC#0 so can make CD drive, PAC#1, each is the defectiveness zone for PAC#4 and PAC#5 district, and because on the bitmap of " PAC is allocation space " field, PSB0, PSB1, PSB2, PSB3, PSB4, each is 1 for PSB5 and PSB6 position, so can make CD drive know PAC#0, PAC#1, PAC#2, PAC#3, PAC#4, each is to be in distribution state for PAC#5 and PAC#6 district.Therefore, in the situation of Figure 12, next available PAC district is PAC#7.

Equally, referring to Figure 13, because on the bitmap of " PAC bunch of defect state " field, each is 1 for PDS0, PDS1, PDS4 and PDS5 position, so each is the defectiveness zone can to make CD drive know PAC#0, PAC#1, PAC#4 and PAC#5 district, and because on the bitmap of " PAC is allocation space " field, each is 1 for PSB0, PSB1, PSB2, PSB4, PSB5 and PSB6 position, and each is to be in distribution state so can make CD drive know PAC#0, PAC#1, PAC#2, PAC#4, PAC#5 and PAC#6 district.

Therefore, in the situation of Figure 13, next available PAC district is PAC#3, and it can be current reusable zone, even the PAC#3 zone before was used.

As previously mentioned, can be recorded on the zone corresponding to the zone in the PACII district in INFO2 district in the PACI district in INFO1 district about the copy of the information in the PACII district in INFO2 district.If the PAC#1 district in PACII district is defective, then the PACI district in PAC#1 district can be used (if not having defective).

By distributing additional (for example, 4) byte to DDS, DDS is not only comprised about the information of 4 bytes in PACII district, also comprise the information about the PACI district.In this case, the information that writes on the PACI does not comprise that the defectiveness in PACII district is regional.

Figure 14 is the schematic diagram that illustrates according to another embodiment of the DDS on the high density compact disc of another exemplary embodiment of the present invention.

Referring to Figure 14, as mentioned above, DDS can comprise " PAC state " field of " DDS identifier " field, " DDS form " field, " PSN (P_DA) field of drive zone ", " PSN (P_DFL) of defect list " field, " the LSN0 position of user data area " field, " inner spare area 0 size (ISA0_size) " field, " outer spare area size (OSA_size) " field, " inner spare area 1 size (ISA1_size) " field and/or expression PAC zone state.

" PAC state " field can have 8 bytes, is used for the state of PAC in the PACI district in the PACII district in expression INFO2 district and INFO1 district, below will be described in detail this.

Figure 15 is the schematic diagram that illustrates according to another embodiment of the DDS of the expression PAC state on the high density compact disc of another exemplary embodiment of the present invention.

Referring to Figure 15, " PAC state " field of DDS can be used 64 positions (8 bytes) altogether, is used for the state of PAC in the PACI district in the PACII district in expression INFO2 district and INFO district.

In this example, two positions of Information Availability among PAC represent, for example, and the state of indicating the PAC#0 in PACI district by minute coordination b1 and b0, divide coordination b2 and b3 to indicate the state of the PAC#2 in PACI district, and the PAC state that distributes follow-up per two positions to indicate in succession the PAC district.Accordingly, position b31 and b30 can represent the PAC#15 state in PACI district, the PAC#0 state that position b33 and b32 can indicate the PAC2 district, and the PAC#15 state that position b63 and b62 can indicate the PAC2 district.

The PAC state in the PAC district that represents with two positions is can indicate PAC not to be recorded at 00 o'clock in these two positions; When these two positions are 01, write PAC as 00 00 00 00 and can indicate PAC to write, even or write as FF FF FF FF can to indicate this PAC to be used in the past also still reusable; When these two positions were 10, PAC was defectiveness zone FF FF FF FE, and when these two positions were 11, PAC was effective PAC (for example, effective PAC=54 53 54 00).

Therefore, it is the zone with position 00 or position 01 that the next one can be write the PAC district, and effectively the position of PAC will be the zone with position 11.

By using said method, " the PAC state " of 8 bytes that CD drive can be from be inserted into DDS district but the field acquisition about the information of the position in the position of effective PAC, defectiveness zone, next one writing position and/or about writing on other relevant information of the PAC in PAC2 district and the PAC1 district.

Figure 16 illustrates the DDS of the expression PAC state on the high density compact disc of another exemplary embodiment according to the present invention.

If the bitmap of " PAC state " field of DDS is identical with the bitmap shown in Figure 16, then because b33 and the b32 of the PAC#0 in the indication PACII district are 11, so know that the PAC#0 in the PACII district is effective PAC.

Equally, because b35 and the b34 of the PAC#1 in the indication PACII district are 10, so know that the PAC#1 in the PACII district is the defectiveness zone, and because b37 and the b36 of the PAC#2 in the indication PACII district are 01, so know that the PAC#2 in the PACII district is the zone that before had been used, or if 00, then be current spendable zone.

Accordingly, if plan to find the position of effective PAC, then CD drive can find " PAC state " field information of DDS to indicate the PAC of position 11, and when planning to find the next one can write the position in PAC district, CD drive can find the

position

01 or 00 in " PAC state " information.

In addition, can write in the PACI district backup of the PAC information in the PACII district, even the bitmap in the bitmap in the indication PACII district of " PAC state " field and indication PACI district is identical, if the position of defectiveness zone and/or other zone similarity is not identical, then two bitmaps can not be identical.Therefore, if plan to read since inevitably situation be written in information in the PACI district, then possible must from DDS " " field information is with reference to the information of indicating the PACI district for the PAC state.

Except the illustrative methods of the PAC state that represents PACII district and PACI district with 8 bytes among the DDS, also have other only to represent the illustrative methods of the PAC state in PACII district with four bytes.As mentioned above, this is because the information that writes in the PACII district is identical with the information that writes in the PACI district, and in the case, if want to know the PAC state in PACI district, then can be from the location positioning PACI district in the PACII district corresponding with the PACI district.

In this example, if because the zone of the defectiveness in PACII or the PACI district or other analogue cause writing accordingly the failure of PAC information in the PACI district with the position in PACII district, then can adopt this regional method of not using.

Represent that with DDS the information of the position of a plurality of effective PAC writes excessively continuously for information exchange wherein and the dish the write BD-RE or the BD-R that are updated are favourable such as exemplary embodiment of the present invention.

For example, since the physical characteristics of Write-once disc so that in the situation of the write-once high density compact disc BD-R that can change whenever the position of after ejection, repeating to write fashionable a plurality of effective PAC, positional information can be used as temporary disk (T-disk) definition structure (TDDS) information and is written on the temporary disk (T-disk) directorial area (TDMA), and write or finish or coil when closing at dish, namely the user no longer wants to carry out to be written as DDS information in other situation about writing.

Figure 17 illustrates the block diagram according to the optical recording/reproducing apparatus of one exemplary embodiment of the present invention.

Referring to Figure 17, this optical recording/reproducing apparatus can comprise: data recording/reproducing device 10, be used for to carry out to the record of CD and/or from the reproduction of CD; And main frame or controller 20, be used for control data recording/reproducing device 10.In one exemplary embodiment, data recording/reproducing device 10 can play the effect of above-mentioned " CD drive " discussed in conjunction with many exemplary embodiments of the present invention.

In one exemplary embodiment, main frame 20 provides the write command that writes to the specific region of CD or the reproduction instruction of reproducing from the specific region of CD to data recording/reproducing device 10, and data recording/reproducing device 10 is in response to carry out record to this specific region/from the reproduction of this specific region from the instruction of main frame 20.

Data recording/reproducing device 10 also can comprise: interface section 12, be used for executive communication, such as with the data of main frame 20 and the exchange of instruction etc.; Pick up part 11, be used for directly to CD write/from disc reading; Data processor 13 is used for receiving signal from picking up part 11, and reverts to required signal value, or the signal that will write is modulated to the signal that can be written on the CD; Servo segment 14 is used for control and picks up part 11 exactly from optical disc reading signal, or write signal on CD exactly; Storer 15 is used for various information and data that interim storage comprises management information; And microcomputer 16, for the various piece of control data recording/reproducing device 10.

A kind of this exemplary optical recording/reproducing apparatus that uses below will be described in the illustrative methods of high density writable optical disc record PAC.

In case CD is inserted in the optical recording/reproducing apparatus, management information can be read from CD, and is stored in the storer 15 of data recording/reproducing device 10, to use in optical disc recording/reproducing.

Under this state, if the user wants to write in the specific region of CD, then main frame 20 as write command, provides this about the information of required writing position and the data that will write to data recording/reproducing device 10.

Microcomputer 16 in the data recording/reproducing device 10 can receive write command, management information from be stored in storer 15 determines that main frame 20 wants whether defectiveness zone of the disc area write, and/or writes according to the write command executing data on the zone that is not the defectiveness zone from main frame 20.

If determine on whole dish or to write be the new feature that has comprised that the data recording/reproducing device of previous version is not provided in the specific region of dish, thereby cause the data recording/reproducing device of previous version not understand, if or be intended to according to the set restriction of user limit such as the specific region to dish write/from the functions such as specific region reproduction of dish, then the microcomputer 16 of data recording/reproducing device 10 can write this regional control information as " unknown PAC is regular " in the PAC district on dish.The microcomputer 16 of data recording/reproducing device 10 also can write such as the PAC information such as the PAC_ID that writes state and as the segment information of the control information on the specific region of dish.

It is effective PAC of one bunch that PAC information can be written as a plurality of sizes in the PAC2 district in INFO2 district, and these a plurality of effective PAC can be written in the PAC1 district in INFO1 district as backup.In this example, the positional information of a plurality of effective PAC can be written on the DDS among the DMA of CD by method according to an exemplary embodiment of the present invention.

Especially, microcomputer 16 can to servo 14 and data processor 13 positional information and the data in zone or the PAC district of data have been provided above providing, thereby finish and write via picking up the desired location place of part 11 on CD.

Accordingly, below will describe a kind of recoding/reproduction and have the method that has write the high density compact disc of PAC information by above-mentioned illustrative methods.

Figure 18 is the process flow diagram of method that the high density compact disc of PAC has been shown according to a kind of recoding/reproduction above-noted of one exemplary embodiment of the present invention.

In case CD is inserted in the optical recording/reproducing apparatus, management information can be read from CD, and is stored in the storer 15 of recording and reconstruction device 10, to use in video disc recording and reproduction.

Information in the storer 10 can comprise the positional information in each district in the upper PAC district of dish.Especially, (S10) can be determined from DDS information in the position of the effective PAC in the PAC district.

After the position of having determined effective PAC, can check the PAC_ID (S20 and S30) of PAC_ID field to verify whether PAC_ID has identified of PAC.

If the PAC_ID that writes identifies, then the method can be determined at the version of the version that coils the recording and reconstruction device that has write data and current record and transcriber identical, or determine there be not independent writing/reproduce restriction, and can be according to from the instruction executive logging of main frame 20/reproduction (S40).

If sign has write on the code failure on the PAC_ID, then the method can determine whether the not on an equal basis restriction of version such as version and current record and the transcriber of the recording and reconstruction device that has write data at dish subsequently, can according to the instruction from main frame, come executive logging/reproduction (S50) with reference to the recoding/reproduction restricted area on the dish that writes on " unknown PAC rule ".

For this reason, microcomputer 16 can according to the instruction of main frame to servo 14 and data processor 13 positional information and data are provided, thereby finish recoding/reproduction via picking up the desired location of part 11 on CD.

As mentioned above, of the present invention have following one or more advantage for equipment and method to high density compact disc record/reproduce from high density compact disc.

At first, the dish accessible area of the driver by defining different editions with PAC can allow to above-noted the more sane protection in data area of user data, for example, can prevent unauthorized access (for example, assault).

The second, a plurality of effective PAC on the dish and/or indicate the pointer of these PAC positions can allow the more effective management to the PAC on the high density compact disc.

The 3rd, come the equipment of recording/reproducing data and method can allow more effective data recording/reproducing on the high density compact disc with PAC.

Industrial applicibility

To those skilled in the art, obviously can carry out various modifications and changes and can not depart from the spirit or scope of the present invention above-mentioned exemplary embodiment of the present invention.Thus, be intended to that the present invention is covered and drop in claims and the equivalence techniques scheme scope thereof to modifications and variations of the present invention.

Claims

1. method that records at recording medium comprises:

The access control data are recorded in the first physical access control zone, the copy of access control data is recorded in the second physical access control zone, described access control Data Control data recording/reproducing device is to the access of described recording medium, the described access control data section of having tabulation and unknown PAC rule, tabulate for described section and specify the corresponding applied a plurality of sections zones of access control data, described unknown PAC rule is specified when described access control data are not identified by described data recording/reproducing device the available operation in each zone in the described recording medium; And

Whether the record described access control data of indication and described copy distinguish effective status information.

2. method as claimed in claim 1 is characterized in that, the information of state that described status information comprises the information of the state of indicating described access control data and indicates the copy of described access control data.

3. method as claimed in claim 1 is characterized in that, described status information is indicated the distribution state of described access control data.

4. method as claimed in claim 1 is characterized in that, described status information is with access control data of two bit representations.

5. method as claimed in claim 4 is characterized in that, two the 01 described access control data of indication can be used again.

6. method as claimed in claim 1 is characterized in that, described status information is written as pointer, thereby need not to scan all access control data and just can be acquired.

7. method as claimed in claim 1 is characterized in that, described access control data also comprise the specific information district, and described specific information district comprises the rule of enabling required application or function.

8. method that is used for from recording medium reproducing comprises:

From the management area read status information of described recording medium, respectively effectively whether the copy of described status information indication access control data and described access control data; And

Reproduce described access control data from the first physical access control zone and reproduce described copy from the second physical access control zone according to described status information, described access control Data Control data recording/reproducing device is to the access of described recording medium, the described access control data section of having tabulation and unknown PAC rule, tabulate for described section and specify the corresponding applied a plurality of sections zones of access control data, described unknown PAC rule is specified when described access control data are not identified by described data recording/reproducing device the available operation in each zone in the described recording medium.

9. method as claimed in claim 8 is characterized in that, described status information is indicated described access control data allocations state.

10. method as claimed in claim 8 is characterized in that, described status information is with access control data of two bit representations.

11. method is characterized in that as claimed in claim 10, two the 01 described access control data of indication can be used again.

12. method is characterized in that as claimed in claim 8, described status information is written as pointer, thereby need not to scan all record cells and just can be acquired.

13. method is characterized in that as claimed in claim 8, described access control data also comprise the specific information district, and described specific information district comprises the rule of enabling required application or function.

14. an equipment that is used at the recording medium identifying recording layer comprises:

Pen recorder, configuration is used at the recording medium identifying recording layer; And

Controller, configuration is used for controlling described pen recorder the access control data is recorded in the first physical access control zone and the copy of described access control data is recorded in the second physical access control zone, the described pen recorder of described access control Data Control is to the access of described recording medium, the described access control data section of having tabulation and unknown PAC rule, the corresponding applied a plurality of sections zones of access control data are specified in described section tabulation, to the available operation in each zone in the described recording medium, described controller configuration is used for recording indicates described access control data and described copy whether to distinguish effective status information to the appointment of described unknown PAC rule when described access control data are not identified by described controller.

15. equipment as claimed in claim 14, it is characterized in that, the configuration of described controller is used for controlling described pen recorder described access control data is recorded in the described first physical access control zone of introducing the district, and described copy is recorded in described the second physical access control zone in the described introducing district.

16. equipment as claimed in claim 14, it is characterized in that, described controller configuration is used for controlling the described access control data of described recording device records and also comprises segment information, and described segment information is indicated the quantity in the applied section zone of access control data of described correspondence.

17. an equipment that is used for from the recording medium reading out data comprises:

Pick up part, configuration is used for from the recording medium reading out data; And

Controller, configuration is used for controlling the described part of picking up from described recording medium read status information, respectively effectively whether the copy of described status information indication access control data and access control data, and described controller configuration is used for controlling the described part of picking up and reads described access control data from the first physical access control zone and read described copy from the second physical access control zone according to described status information, the described part of picking up of described access control Data Control is to the access of described recording medium, the described access control data section of having tabulation and unknown PAC rule, tabulate for described section and specify the corresponding applied a plurality of sections zones of access control data, described unknown PAC rule is specified when described access control data are not identified by described controller the available operation in each zone in the described recording medium.

18. equipment as claimed in claim 17, it is characterized in that, described controller configures for controlling the described part read access from the described first physical access control zone of introducing the district that picks up and controls data, and reads described copy in described the second physical access control zone from described introducing district.

19. equipment is characterized in that as claimed in claim 17, described controller configuration is used for identifying effective access control data based on described status information, and controls the described part of picking up and read described effective access control data from described recording medium.

20. equipment as claimed in claim 17, it is characterized in that, described controller configuration is used for determining whether described controller can identify described access control data, if and described controller can not identify described access control data, according to the described access of picking up part of unknown PAC rule control.